Existing South Africa Standpipe Design Guidelines
The most recent set of South African design guidelines for rural water-supply systems are those published by the South African Department of Water Affairs and Forestry in 2004 (DWAF 2004), which offer only a few points pertaining specifically to standpipe design:
Standpipes should be a maximum walking distance of 200 m from the home.
A maximum of 25 households or 100 people should be served by a standpipe.
The flow rate should not be less than 10 litres/minute.
The maximum static pressure should be 90 m.
The minimum pressure should be 6 m when 80% of the standpipes in the system are open.
An isolating valve should be provided at each standpipe.
The tap should preferably be a pushbutton or self-closing type.
The tap should be high enough for a container to fit underneath.
A stand should preferably be provided for the container, with the tap higher up.
A concrete plinth should be provided to drain the water into a soak-away sump with crushed stone.